<?php

/**
 * @file
 * Page callback file for the blog module.
 */

/**
 * Menu callback; displays a Drupal page containing recent blog entries of a given user.
 */
function blog_page_user($account) {
	global $user;

	drupal_set_title($title = t("@name's blog", array('@name' => format_username($account))), PASS_THROUGH);

	$build = array();

	$query = db_select('node', 'n')->extend('PagerDefault');
	$nids = $query
	->fields('n', array('nid', 'sticky', 'created'))
	->condition('type', 'blog')
	->condition('uid', $account->uid)
	->condition('status', 1)
	->orderBy('sticky', 'DESC')
	->orderBy('created', 'DESC')
	->limit(variable_get('default_nodes_main', 10))
	->addTag('node_access')
	->execute()
	->fetchCol();

	if (!empty($nids)) {
		$nodes = node_load_multiple($nids);
		$build += node_view_multiple($nodes);
		$build['pager'] = array(
				'#theme' => 'pager',
				'#weight' => 5,
		);
	}
	else {
		if ($account->uid == $user->uid) {
			drupal_set_message(t('You have not created any blog entries.'));
		}
		else {
			drupal_set_message(t('!author has not created any blog entries.', array('!author' => theme('username', array('account' => $account)))));
		}
	}
	drupal_add_feed('blog/' . $account->uid . '/feed', t('RSS - !title', array('!title' => $title)));

	return $build;
}

/**
 * Menu callback; displays a Drupal page containing recent blog entries of all users.
 */
function blog_page_last() {
	global $user;
	$build = array();

	$query = db_select('node', 'n')->extend('PagerDefault');
	$nids = $query
	->fields('n', array('nid', 'sticky', 'created'))
	->condition('type', 'blog')
	->condition('status', 1)
	->orderBy('sticky', 'DESC')
	->orderBy('created', 'DESC')
	->limit(variable_get('default_nodes_main', 10))
	->addTag('node_access')
	->execute()
	->fetchCol();

	if (!empty($nids)) {
		$nodes = node_load_multiple($nids);
		$build += node_view_multiple($nodes);
		$build['pager'] = array(
				'#theme' => 'pager',
				'#weight' => 5,
		);
	}
	else {
		drupal_set_message(t('No blog entries have been created.'));
	}
	drupal_add_feed('blog/feed', t('RSS - blogs'));

	return $build;
}

/**
 * Menu callback; displays an RSS feed containing recent blog entries of a given user.
 */
function blog_feed_user($account) {

	$nids = db_select('node', 'n')
	->fields('n', array('nid', 'created'))
	->condition('type', 'blog')
	->condition('uid', $account->uid)
	->condition('status', 1)
	->orderBy('created', 'DESC')
	->range(0, variable_get('feed_default_items', 10))
	->addTag('node_access')
	->execute()
	->fetchCol();

	$channel['title'] = t("!name's blog", array('!name' => format_username($account)));
	$channel['link'] = url('blog/' . $account->uid, array('absolute' => TRUE));

	node_feed($nids, $channel);
}

/**
 * Menu callback; displays an RSS feed containing recent blog entries of all users.
 */
function blog_feed_last() {
	$nids = db_select('node', 'n')
	->fields('n', array('nid', 'created'))
	->condition('type', 'blog')
	->condition('status', 1)
	->orderBy('created', 'DESC')
	->range(0, variable_get('feed_default_items', 10))
	->addTag('node_access')
	->execute()
	->fetchCol();

	$channel['title'] = t('!site_name blogs', array('!site_name' => variable_get('site_name', 'Drupal')));
	$channel['link'] = url('blog', array('absolute' => TRUE));

	node_feed($nids, $channel);
}
